GB600627A - Transformer for passing from electrically symmetrical systems to unsymmetrical systems and vice versa - Google Patents

Transformer for passing from electrically symmetrical systems to unsymmetrical systems and vice versa

Info

Publication number
GB600627A
GB600627A GB8455/45A GB845545A GB600627A GB 600627 A GB600627 A GB 600627A GB 8455/45 A GB8455/45 A GB 8455/45A GB 845545 A GB845545 A GB 845545A GB 600627 A GB600627 A GB 600627A
Authority
GB
United Kingdom
Prior art keywords
winding
parts
systems
windings
centre
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB8455/45A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Publication of GB600627A publication Critical patent/GB600627A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/30—Reducing interference caused by unbalance current in a normally balanced line
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/02—Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • H01F27/385—Auxiliary core members; Auxiliary coils or windings for reducing harmonics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/42—Balance/unbalance networks

Abstract

600,627. Transformers. PATELHOLD PATENTVERWERTUNGS- & ELEKTROHOLDING AKT.-GES. April 5, 1945, No. 8455. Convention date, April 13, 1944. [Class 38 (ii)] In a transformer connecting symmetrical and unsymmetrical systems and having the centre of that winding which is connected to the symmetrical system and one end of the other winding at the same potential, the primary winding, which is in four series connected parts, comprises at least two cylindrical windings and the secondary at least one cylindrical winding, and one winding completely surrounds the other. In the construction shown in Fig. 2 the main parts f and g of the two windings are screened by the interposition of the central parts d 1 , d 2 of the centre tapped winding and the end part e of the other winding, these parts having a one to one transmission ratio. The voltage difference between the two screening winding parts is uniform along the turns, being the difference between - U to + U and o to 2u. In the limiting case as shown in Fig. 5 the winding s is not divided into a screening and another part, while the other winding p having four parts d 1 , d 2 , f 1 , f 2 is dimensioned for a transmission ratio of 1.7 : 1 suitable for the modulator stage in push-pull connection to high frequency stages, Fig. 1 (not shown). Fig. 8 shows the physical arrangement of such windings round a core shown by the dotted lines k 1 , k 2 . For a fine tuning of the oscillation circuits formed by winding sections d 1 , d 2 , f 1 , f 2 and their parallel capacitances, adjustable condensers can be located between the centre of this winding and the ends of the sections. Fig. 9 (not shown). For convenience of manufacture the four parts d 1 , d 2 , f 1 , f 2 may be made equal when the balance is not perfect.
GB8455/45A 1944-04-13 1945-04-05 Transformer for passing from electrically symmetrical systems to unsymmetrical systems and vice versa Expired GB600627A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH600627X 1944-04-13

Publications (1)

Publication Number Publication Date
GB600627A true GB600627A (en) 1948-04-14

Family

ID=4522729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8455/45A Expired GB600627A (en) 1944-04-13 1945-04-05 Transformer for passing from electrically symmetrical systems to unsymmetrical systems and vice versa

Country Status (5)

Country Link
US (1) US2542915A (en)
BE (1) BE459741A (en)
CH (1) CH242751A (en)
GB (1) GB600627A (en)
NL (1) NL62888C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763776A (en) * 1951-10-18 1956-09-18 Avco Mfg Corp Ultrahigh-frequency converter for very-high-frequency television receiver
US3031609A (en) * 1959-06-24 1962-04-24 Jr William M Murphy Balanced transformer
BE793240A (en) * 1971-12-27 1973-04-16 Western Electric Co REDUCED INSERTION LOSS COUPLER
WO2007133169A1 (en) * 2006-05-12 2007-11-22 Great Man Made River Co. For Reclamation And Construction Description electro-ageeb electrical safety device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1559850A (en) * 1922-04-08 1925-11-03 Western Electric Co Transmission system
US1534086A (en) * 1922-08-08 1925-04-21 Western Electric Co Transformer circuits
US2013154A (en) * 1932-09-08 1935-09-03 Bell Telephone Labor Inc Translating circuit
US2013140A (en) * 1932-09-16 1935-09-03 Bell Telephone Labor Inc Translating circuit
CH212712A (en) * 1938-09-06 1940-12-15 Licentia Gmbh Transformer with several single concentric primary and / or secondary windings.
FR868091A (en) * 1939-10-23 1941-12-15 Telefunken Gmbh Transformers for Class B Balanced Amplifiers
US2272452A (en) * 1941-05-08 1942-02-10 Bell Telephone Labor Inc Transformer

Also Published As

Publication number Publication date
CH242751A (en) 1946-05-31
NL62888C (en)
BE459741A (en)
US2542915A (en) 1951-02-20

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